Finding the Fourth Proportional to 136,142.09, 187,848.51 and 79,542.53
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Solution
The fourth proportional to 136,142.09, 187,848.51 and 79,542.53 is: 109,752.58
Step by Step Solution
- Step 1: Write the proportion equation
136,142.09 : 187,848.51 = 79,542.53 : x - Step 2: Convert to fraction form
136,142.09/187,848.51 = 79,542.53/x - Step 3: Cross multiply
136,142.09x = 187,848.51 × 79,542.53 - Step 4: Simplify right side
136,142.09x = 14,941,945,742.13 - Step 5: Solve for x
x = 14,941,945,742.13/136,142.09 - Step 6: Final answer
x = 109,752.58
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.